JP2002215269A - Electronics - Google Patents

Abstract

(57) [Summary] In a portable electronic device such as a notebook personal computer, an electronic device capable of reducing the influence of noise generated from a cable without increasing the size of an electronic device housing. The purpose is to provide. A cable (19) is provided from the inside of a main body case (2) to a display unit case (3) via a hinge portion (6). The cable duct 20 is arranged so as to cover the cable to reduce electromagnetic waves from the cable. The cable duct 20 contacts the cable 19 and the main body case 2 to establish conduction between the cable 19 and the main body case 2, thereby reducing EMI by establishing a ground connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable mounting structure and a mounting method for an electronic device having a display unit such as a notebook personal computer.

[0002]

2. Description of the Related Art In recent years, the speed of electric signals used in portable electronic devices typified by notebook personal computers has been steadily increasing. In addition, the types of cables are increasing with the increase in the number of functions. On the other hand, since the housing of personal computers is becoming smaller and thinner, the mounting density inside the housing is dramatically increased.

[0003] For this reason, cables for connecting the modules are laid around the inside of the personal computer housing. Particularly, in a notebook personal computer or the like, the main body case having a keyboard is connected to the display case having a display. EMI (Elec) to transmit large-capacity data at high speed on the cable for transmitting display data to
tro Magnetic Interference) measures are required.

Conventionally, in order to avoid this EMI, a circuit has been designed to shorten the distance between the cable and the hinge so as to minimize the signal propagation path in the main body case.

[0005]

[Problems to be solved by the invention]

As described above, as the mounting density increases, the possibility of generation of electromagnetic waves and noise from cables that propagate signals increases, so that measures to eliminate noise from the cables are indispensable.

In circuit design, when a cable is routed from the system board of the main body to the display side, if a wiring path of the cable becomes long, a noise countermeasure core (ferrite) is usually used to remove noise. It is necessary to increase the number of components such as the core), but a space for mounting these components is required, and the size of the housing tends to be large and heavy.

In order to solve the above-mentioned problems, according to the present invention, in a portable electronic device such as a notebook personal computer, it is possible to reduce the influence of noise generated from a cable without increasing the size of an electronic device housing. It is intended to provide a possible electronic device.

[0009]

According to the present invention, there is provided an electronic apparatus comprising a display unit and a main unit for transmitting a control signal of the display unit. , And a cover member formed so as to cover the outer peripheral side surface of the signal line and connected to the main body.

With this configuration, it is possible to provide an electronic device capable of reducing electromagnetic noise from a signal line that propagates a signal.

Further, in the invention according to claim 6, in an electronic device comprising a display section having a display panel and a main body section rotatably connecting the display section, the display section and the main body section are rotatable. A hinge portion to be connected; a signal line for transmitting a signal from the main body portion to the display portion via the hinge portion; and a cover member formed to cover an outer peripheral side surface of the signal line and connected to the main body portion. It is characterized by the following.

With this configuration, it is possible to provide an electronic device that reduces electromagnetic wave noise from a signal line that propagates a signal and reduces the influence of noise on a display unit.

[0013]

Embodiments of the present invention will be described below.
This will be described with reference to the drawings.

FIG. 1 is a perspective view of an electronic apparatus according to the first embodiment.

A personal computer 1 as shown in FIG. 1 comprises a main body case 2, a display unit case 3, an LCD panel 4, and a keyboard 5.
And The main body case 2 has a keyboard 5 on its upper surface.
Is arranged. The body case 2 and the display case 3
It is rotatably connected by a hinge 6. The display case 3 holds the periphery of the LCD panel 4 so that the display area of the LCD panel 4 is in a visible state. The display unit case 3 is rotatable in the direction of arrow CD through the hinge 6, and is rotatable between a closed position that covers the keyboard 5 and an open position that enables the keyboard 5 to be used. .

FIG. 2 is a perspective view of the inside of the personal computer with the keyboard removed.

The internal configuration of the personal computer 1 is the same as that of a commonly used personal computer, and includes a CPU 11, a memory 12, and the like. These CPU 11 and memory 1
2 is attached to the system board 14 in the main body.

The system board 14 and the inverter circuit 16 are connected via a cable 19 from a connector 15 for transmitting a video signal from the system board 14 to the LCD panel 4.

The inverter circuit 16 displays the video signal data transmitted via the cable 19 on the LCD panel 4.

The cable 19 is provided from the inside of the main body case 2 to the display unit case 3 via the hinge portion 6. A duct 20 is arranged to cover the cable.

The coating on the outer side of the cable 19 is made of a conductive material.

Next, FIG. 3 shows a hinge 6 on the inner surface of the personal computer 1.
FIG. FIG. 4 is a sectional view taken along line AA of FIG. 3, and FIG. 5 is an enlarged view of the vicinity of the cable of FIG.

FIG. 3 is a view of the vicinity of the hinge portion 6 of the main body case 2 as viewed from the inside.

As shown in FIGS. 4 and 5, the cable duct 20 is formed in a U-shape so as to cover the cable 19 from three sides, and one side is covered by the main body case 2.

The cable duct 20 is formed so as to be in contact with the outer peripheral side surface of the cable 19.

The cable duct 20 is provided so as to electrically connect the cable 19 to the main body case 2, thereby taking the ground in the main body case 2 and reducing the influence of electromagnetic wave noise.

The cable duct 20 is formed in consideration of the diameter n of the cable 19 so as to be in contact with the outer peripheral side surface of the cable 19. Side surface 20 of cable duct 20
The distance between a and 20c is processed so as to maintain the size of the diameter n.

The main body case 2 and the cable duct 20
Is formed so as to keep the distance of the diameter n from the bottom surface 20b.

As described above, the cable 19 is covered so that the outer peripheral side thereof is in contact with the cable duct 20 and the main body case 2, and is grounded by the main body case 2. It is possible to propose the effect of the electromagnetic wave noise that occurs in the system.

As described above, it is possible to take measures to prevent noise propagation in a cable without increasing the number of components such as a ferrite core for noise suppression.

The present invention is not limited to the above embodiment as long as it does not depart from the gist of the present invention.
The present invention is also applicable to an electronic device such as A (Personal Digital Assistants) in which the display unit and the main unit are integrated.

[0032]

According to the invention described in detail above, it is possible to provide an electronic device capable of suppressing electromagnetic noise generated from a cable for transmitting a signal.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electronic device.

FIG. 2 is an internal perspective view of the electronic device.

FIG. 3 is an exemplary plan view of the electronic device as viewed from the inside;

FIG. 4 is a sectional view taken along line AA.

FIG. 5 is an enlarged view near a cable duct.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Personal computer 2 ... Main body case 3 ... Display case 4 ... LCD panel 5 ... Keyboard 6 ... Hinge part 11 ... CPU 12 ... Memory 14 ... System board 15 ... Connector 16 ... Inverter circuit 19 ... Cable 20 ... Cable duct

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Nobuyasu Tajima 2-9-9 Suehirocho, Ome-shi, Tokyo Inside the Toshiba Ome Plant Co., Ltd. (72) Inventor Naohiro Yokoyama 3-3-1, Shinmachi, Ome-shi, Tokyo 1 Toshiba Digital Media Engineering Co., Ltd. In-house (72) Inventor Yasuyuki Suzuki 1-3-3 Shinmachi, Ome-shi, Tokyo Toshiba Digital Media Engineering Co., Ltd. F-term (reference) 5E321 AA01 GG09

Claims (10)

[Claims] An electronic device comprising a display unit and a main unit for transmitting a control signal for the display unit, a signal line for transmitting a signal from the main unit to the display unit, and an outer peripheral side surface of the signal line And a cover member formed to cover the main body and connected to the main body. 2. The apparatus according to claim 1, wherein said cover member is disposed so as to contact at least one point with said signal line.
An electronic device according to claim 1. 3. The electronic device according to claim 1, wherein the cover member is formed so as to contact an outer peripheral side surface of the signal line from three directions. 4. The electronic apparatus according to claim 1, wherein the cover member is formed of a conductive material, and is arranged so as to electrically connect the signal line and the main body. 5. The signal line is formed so as to be in contact with three surfaces of the cover member formed in a U-shape, and the signal line is further formed on one open surface of the cover member. The electronic device according to claim 1, wherein the electronic device is in contact with the main body case. 6. An electronic apparatus comprising: a display unit having a display panel; and a main body unit rotatably connecting the display unit, and a hinge unit rotatably connecting the display unit and the main body unit. A signal line for transmitting a signal from the main unit to the display unit via the hinge unit, and a cover member formed so as to cover an outer peripheral side surface of the signal line and connected to the main unit. Electronic equipment characterized by the above-mentioned. 7. The electronic device according to claim 6, wherein the cover member is disposed in the main body and is disposed so as to contact at least one point with the signal line. 8. The electronic device according to claim 6, wherein the cover member is formed so that an outer peripheral side surface of the signal line is in contact with the signal line from three directions. 9. The electronic apparatus according to claim 6, wherein the cover member is formed of a conductive material, and is disposed so as to electrically connect the signal line and the main body. 10. The signal line is formed so as to be in contact with three surfaces of the cover member formed in a U-shape, and the signal line is further formed on one open surface of the cover member. The electronic device according to claim 6, wherein the electronic device is in contact with the main body case.